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A sample of n = 20 scores is transformed into z-scores. What is the mean for the set of 20 z-scores?
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A sample of n = 20 scores is transformed into z-scores. What is the mean for the set of 20 z-scores?

User Iheanyi
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2 Answers

4 votes
The mean is always 0........
User Renato Prado
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5 votes
When speaking of z-scores:  the mean is always zero (0).
User Elnatan Derech
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